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Diodes Incorporated GBU15L08
- Part No.:
- GBU15L08
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, GBU
- Datasheet:
-
GBU15L08.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 15A GBU
- Quantity:
- Payment:
- Shipping:
Inventory:9,414
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Product details
Overview
GBU15L08 from Diodes Incorporated is a 15A, 800V glass-passivated single-phase bridge rectifier in GBU package, featuring low forward voltage (0.90 V max @ 7.5 A), 10 µA max reverse leakage at 800 V, and 250 A peak surge current (8.3 ms, TJ = +25°C), widely used in AC/DC power supplies for industrial motor drives and LED lighting systems.
For engineers reviewing the GBU15L08 datasheet, GBU15L08 pinout, GBU15L08 application, or GBU15L08 equivalent, key selection criteria include repetitive peak reverse voltage rating, thermal resistance with/without heatsink, forward voltage drop under load, surge current capability, and RoHS-compliant lead-free construction for high-reliability board-level rectification.
Technical Context
The GBU15L08 integrates four silicon diodes in a single-phase full-wave bridge configuration with glass-passivated junctions for enhanced reliability under transient stress. Its 800 V VRRM rating supports universal input (85–265 VAC) rectification while maintaining low conduction loss.
Thermal design flexibility is enabled by dual derating curves: 15 A average current with heatsink at 150°C case temperature, dropping to 4 A without heatsink; junction-to-ambient thermal resistance is 28°C/W unmounted and improves to 6°C/W with a 200 mm × 200 mm × 5 mm copper heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands peak reverse voltage in universal AC line applications up to 265 VAC RMS. |
| IF(AV) | 15 A (with heatsink) - Sustains continuous DC output current in high-power SMPS and industrial power supplies. |
| VF Max | 0.90 V @ 7.5 A - Reduces conduction loss and heat generation compared to standard silicon bridges. |
| IR Max | 10 µA @ 800 V - Ensures minimal standby power loss and stable blocking in high-impedance circuits. |
| IFSM (8.3ms) | 250 A @ TJ = +25°C - Handles cold-start inrush currents in transformer-coupled or capacitive-input supplies. |
| RθJA | 28 °C/W (no heatsink) - Defines minimum PCB copper area and airflow requirements for thermal management. |
| Junction Temp | −40°C to +150°C - Supports operation in automotive under-hood and industrial ambient environments. |
Pinout & Package
Package: GBU - 4-pin single-in-line (SIP) plastic body with matte tin-plated leads, UL 94V-0 rated, 4.0 g weight, polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One of two AC input pins; connects to live or neutral side of transformer secondary or AC line. |
| AC2 | Input AC terminal 2 | Second AC input pin; completes full-wave bridge input path with AC1. |
| + (Anode Output) | Positive DC output | Full-wave rectified positive rail; connects to bulk capacitor or downstream DC-DC stage. |
| − (Cathode Output) | Negative DC output / common return | DC common reference; ties to ground or negative rail of output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Improves long-term reliability and moisture resistance versus epoxy-passivated alternatives. |
| Low VF (0.90 V max) | Reduces power dissipation by ~15% vs. legacy 1.1 V bridges at 7.5 A, easing thermal design. |
| UL Recognized (E95060) | Validates safety compliance for end-equipment certification in North America. |
| Lead-free & Halogen-free | Meets RoHS 3 and automotive "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb). |
| High IFSM (250 A) | Survives repeated cold-start surges without degradation in industrial control power modules. |
Applications
| Industrial Motor Drives | LED Street Lighting Power Supplies |
|---|---|
Use Scenario: Rectifying 230 VAC mains to DC bus for 3-phase inverter stages in HVAC compressors and pump controllers. IC Role / Device Role / Timing Role: Primary AC/DC conversion device; provides isolated, ripple-filtered DC input to IGBT gate drivers and control logic. Use Value: 800 V VRRM ensures margin against line transients; low VF minimizes heat buildup in enclosed drive enclosures. | Use Scenario: High-efficiency offline LED driver powering 100–200 W luminaires in outdoor streetlighting infrastructure. IC Role / Device Role / Timing Role: Input-stage bridge rectifier feeding PFC controller and flyback or buck-boost converter. Use Value: 15 A IF(AV) rating supports high-lumen designs; UL recognition simplifies regional safety approvals. |
| Industrial PLC Power Modules | Medical Diagnostic Equipment Power Supplies |
Use Scenario: Dual-rail DC power generation for programmable logic controller backplanes requiring stable 5 V and 24 V rails. IC Role / Device Role / Timing Role: Bulk rectification stage preceding wide-input DC-DC converters with tight regulation. Use Value: −40°C to +150°C operating range enables use in uncooled control cabinets; low IR prevents leakage-induced reset faults. | Use Scenario: Isolated auxiliary power supply for imaging subsystems (e.g., ultrasound beamformers, X-ray detector biasing). IC Role / Device Role / Timing Role: First-stage rectifier in medically certified offline power supplies meeting IEC 60601-1 creepage/clearance requirements. Use Value: Glass passivation enhances long-term stability in high-humidity clinical environments; RoHS/Green compliance meets global medical procurement mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU15K | VRRM = 800 V, VF = 0.95 V max @ 7.5 A, IFSM = 200 A (8.3 ms) | Lower surge rating and higher VF reduce margin in high-inrush or thermally constrained designs. | Acceptable where ambient temperature is controlled and inrush is limited by NTC thermistors. |
| GBU15J | VRRM = 600 V, same VF and IFSM specs as GBU15L08 | Insufficient voltage margin for 230 VAC+ applications; risk of avalanche failure during line spikes. | Only suitable for 115 VAC-only systems or DC-DC input stages with clamped voltage rails. |
Compared with GBU15K and GBU15J, the GBU15L08 delivers superior thermal performance (lower RθJA), higher surge robustness, and full 800 V line-spike immunity-making it the preferred choice for universal-input, high-reliability industrial power conversion.
Availability
GBU15L08 is available at Aetrix Electronics and suitable for industrial motor drives, LED street lighting power supplies, PLC power modules, and medical diagnostic equipment requiring stable component supply across extended production lifecycles.
Supply support for GBU15L08 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, high-reliability components for power management, signal integrity, and protection applications.
The GBU series belongs to Diodes' high-current bridge rectifier product line, engineered for rugged AC/DC conversion in industrial, automotive, and medical power systems demanding long-term stability and regulatory compliance.
FAQ
What is the maximum junction temperature and how does it affect thermal design?
The GBU15L08 has an operating junction temperature range of −40°C to +150°C. At 150°C junction temperature, its average forward current derates to 15 A with heatsink or 4 A without. Thermal resistance values (RθJC = 6°C/W, RθJA = 28°C/W unmounted) directly determine required heatsink size and PCB copper area to maintain safe junction temperatures under full load.
Is the GBU15L08 suitable for automotive applications?
The GBU15L08 is not AEC-Q101 qualified out-of-the-box, but Diodes offers automotive-grade variants (e.g., GBU15L08Q) with PPAP documentation, IATF 16949 manufacturing, and AEC-Q101 stress testing. Standard GBU15L08 may be used in non-safety-critical automotive subsystems only after customer qualification per internal change control procedures.
How does the glass-passivated die improve reliability over epoxy-passivated bridges?
Glass passivation provides superior moisture barrier properties and thermal cycle stability versus organic epoxy layers. It prevents electrochemical migration and junction corrosion under humid or thermally cycling conditions-critical for industrial and outdoor LED lighting applications where long-term parametric drift must be minimized.
Can the GBU15L08 replace older GBU15A or GBU15B bridges in existing designs?
Yes-the GBU15L08 is a direct drop-in replacement for GBU15A/B in terms of pinout, footprint, and voltage/current ratings. Its lower VF (0.90 V vs. 1.05–1.10 V) reduces conduction loss and junction temperature, improving system efficiency and thermal margin without layout changes.
GBU15L08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, GBU
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 800 V
- Current - Average Rectified (Io):
- 15 A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 7.5 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- GBU
GBU15L08 FAQ
1.How can I place an order for GBU15L08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GBU15L08 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for GBU15L08 reliable?
The price and inventory of GBU15L08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GBU15L08 is usually 5 days.
3.What payment methods are accepted for GBU15L08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GBU15L08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GBU15L08?
GBU15L08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GBU15L08 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for GBU15L08?
For technical support, including GBU15L08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GBU15L08 requirements.
6.How does Aetrix verify that GBU15L08 is sourced from the original manufacturer or authorized distributors?
All GBU15L08 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that GBU15L08 meets industry standards.
7.What is the process for return or replacement of GBU15L08?
All GBU15L08 units undergo pre-shipment inspection (PSI). If there is an issue with GBU15L08, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The GBU15L08 part is unused and in its original packaging.
Return procedure for GBU15L08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GBU15L08 Tags
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